Wheel-plow.



, PATENTBD DEG. 24, 1907. vv. H. PARLIN.

y WHEEL PLOW.

' APPLICATION FILED MAY 11.1906.v

ms Nessus Farms cn., wAsHnycroN, n. c,

vthrough the collar.

NITEI) STATES PATENT OFFICE.

WILLIAM H. PARLIN, OF CANTON, ILLINOIS, ASSIGNOR TO PARLIN c ORENDORFFCOMPANY, OF CANTON, ILLINOIS, A CORPORATION OF ILLINOIS.

WHEEL-PLOW.

Patented Dec. 24, 1907.

Application fled'May l1, 1906. Serial No. 316,370.

To all 'whom it may concern:

Be it known thaty I, WILLIAM H. PARLIN, a resident of the city ofCanton, county of Fulton, and State of Illinois, have invented certainnew and useful Improvements in IVheel- Plows, of which the following isa specification.

This invention relates to wheel plows in which the rear caster wheelruns against a side of a furrow to hold the plow from cutting too far toland, and the general idea is to control the caster wheel from the draftevener by means of a connection that extends clear of the seat and highenough to permit any desired degree of adjustment of the framevertically on the caster shaft.

The invention is particularly applicable to disk plows, although notnecessarily coniined thereto.

In the drawing forming part of this specification, so much of a wheelplow as is needed to explain my invention is shown in plan in Figure 1 gthe parts most directly concerned with my invention being shown in solidlines and more remote parts being shown in broken lines. Fig. 2 is adetail in side .elevation of the swingable stop arm and parts directlyrelated thereto.

The draft bar of the plow frame is shown at 1 and an evener 2 ispivotally hitched at 3 to the front end of the draft bar. A link bar 4connects pivotally with the evener at 5 and the rear end of the link isconnected with cross lever 6 at 8. The lever is fulcrumed between itsends to the draft bar, as shown at 7 and the castercontrolling strut rod9 extends rearward from end 10 of the cross lever. A bracket 16 isattached to the rear part of the plow frame and it forms a bearing forthe caster shaft 17. An extension 18 of the caster shaft 17 projectsrearward and then turns sidewise to provide a spindle for the casterwheel 19. An arm 15 is secured to* the upper end of the caster shaft, acollar 14 is swiveled in the swinging end of arm 15 and the controllingrod 9 extends slidably A swingable stop arm 11 is pivoted at 13 on a lug12 of the rod 9 and when the stop is laid down against the collar, asshown in the drawings, its swingable end bears normally against thecollar and forms a stop for arm 15, and for the caster wheel 19.

The caster wheel runs a ainst a side of furrow 20, the resistance o thesoil acts obliquely on the plows, as shown by the arrows, and tends toforce the plows to land. The bearing of stop arm 11 against collar 14prevents the rearward extension 18 of the along the furrow as the teamsway imparted to the caster arm through the evener will permit. Theoblique soil pressure would force the caster wheel to swing to theright, if the wheel were unrestrained, and this would carry the swingingend of arm 15 forward and ermit the plows to drift landward. But t e rod9 takes the forward thrust of the arm and holds the arm as nearly steadyas practical results demand.

The long end of the evener extends to the land side of the draft hitch,in order to dispose the team advantageously with reference to thefurrows, and the link 4 connects with the lower end of the evener. Thepush of the caster arm against the shoulder ofthe strut rod istransmitted to the evener as a pull and the force required to restrainthe caster wheel within practical limits tends to equalize the pull onthe two ends of the evener, or to apply the entire draft of the plow toapproximately the longitudinal center of the evener.

The rod 9 extends to one side of the drivers seat, entirely out of linetherewith, the arm 15 extends away from the seatand so it is possible tohave the arm so high that adjustment of the frame on the caster shaft,or of adjustment of the shaft in the frame,

lmay be made to any desired extent without disturbing the arm. A

The plow is ordinarily turned to the left and the stop arm 11 moves awayfrom the collar to give the caster wheel free swing in turning. As theparts line up after a turn is made the stop arm automatically assumesits shown contact with the collar and reassumes its caster-controllingfunction. casel it should be desired to turn therplow to the right, atan end of the field, or otherwhere, the stop arm 11 is swung on pivot 13and enough clearance is thereby established to permit the requiredforward swing of the arm 15.

While the connection with the evener does not form a rigid stop for thecaster Wheel, it operates in a manner sufficient for all practicalpurposes and has the added advantage of throwing a pull onto the longend of the evener to equalize the draft.

I claim l. In a Wheel plow, the combination of a plow frame, a draftevener pivotally connected with the front end of the plow frame, acaster Wheel mounted on a rearward extension of a vertical shaftjournaled in a bearing in the rear end of the plow frame, an arm securedto the upper end of the caster wheel shaft and extended sidewisetherefrom, a lever fulcrumed between its ends on the plow frame, aconnection between the arm of the caster wheel shaft and one end of thelever upon the saine side of their respective pivotal points, and aconnection between the other end of lthe lever and the evener upon thesame side of their respective pivotal points, substantially asdescribed.

2. In a Wheel plow, the combination of a plow frame, a draft evenerpivotally connected with the front end of the plow frame, a caster wheelmounted on a rearward extension of a vertical shaft journaled in abearing in the rear end of the plow frame, an arm secured to the upperend of the caster shaft and extended sidewise therefrom, a collarswiveled in the swinging end of the arm, a

strut rod extended through the collar and having a stop adapted toengage the front side of the collar, a cross lever with one end of whichthe front end of the strut rod is connected, and a link connecting theother end of the cross lever with the evener at a point to one side ofthe draft hitch, substantially as described.

3. In a Wheel plow, the combination of a plow frame, a draft evenerpivotally connected with the front end of the plow frame, a caster wheelmounted on a rearward extern sion of a caster shaft having a bearing inthe rear end of the plow frame, an arm secured to the upper end' of thecaster shaft, a collar swiveled in the swinging end of the arm, a

strut rod extended through the collar, a

swingable stop arm pivotally connected with the strut rod at somedistance in front of the collar and adapted to lie with its swingableend in contact with the collar, a cross lever with one end of which thefront end of the strut rod is connected, and a link connecting the otherend of the cross lever with the evener, substantially in the manner andfor the purpose described.

In testimony whereof I sign my naine in the presence of two subscribingwitnesses.

WM. II. PARLIN.

Iitnesses:

ALICE M. HUrToN, M. LOUISE Mon'roN.

